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Revision as of 11:33, 20 January 2015 by T.ask (talk | contribs) (Change section to systemd only, because cron example isn't provided anymore.)
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vnStat is a lightweight (command line) network traffic monitor. It monitors selectable interfaces and stores network traffic logs in a database for later analysis.


Install vnstat from the official repositories.


First open VnStat/etc/vnstat.conf with your editor and check the interface name is set right, eg.:

# Interface "enp3s0"

Create Interface Database

First you need to create the vnStat directory:

# mkdir /var/lib/vnstat

then create the interface database you like to monitor by using the corresponding command, eg. enp3s0:

# vnstat -u -i enp3s0

or the wireless interface:

# vnstat -u -i wlan0

Start Systemd Service

After introducing the interface(s) and checking the config file. You can start the monitoring process via systemd

# systemctl start vnstat.service

To make this service permanent use

# systemctl enable vnstat.service


Query the network traffic:

# vnstat -q

Viewing live network traffic usage:

# vnstat -l

To find more options, use:

# vnstat --help

See Also

VnStat Custom WebUI